re PR tree-optimization/80158 (ICE in all_phi_incrs_profitable)

2017-03-29  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR tree-optimization/80158
	* gimple-ssa-strength-reduction.c (replace_mult_candidate):
	Handle possible future case of more than one alternate
	interpretation.
	(replace_rhs_if_not_dup): Likewise.
	(replace_one_candidate): Likewise.


Co-Authored-By: Richard Biener <rguenther@suse.de>

From-SVN: r246567